Improvement in rotary pumping apparatus



B. T. BABBITT. Rotary Pumping Apparatus.

No. 220,108. Patented Sept. 30,1879.

.N, PETERS. FHOTO-LITHOGRAPMER, WASHINGTON. D C,

UNITED STATES PATENT OFFICE.

BENJAMIN T. BABBITT, OF NEW YORK, N. Y.

IMPROVEMENT IN ROTARY PUMPING APPARATUS.

Specification forming part of Letters Patent No. 220,108, datedSeptember 30, 1879 application filed April 10, 1879.

To all whom it may concern;

Be it known that I, BENJAMIN T. BABBITT, of the city and State of NewYork, have invented a new and useful Improvement in R0- tary PumpingApparatus, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification.

This invention] consists in a certain combination of rotary orcentrifugal pumps, an intermediately-arranged rotary engine for drivingsaid pumps, a single shaft common to both the engine and the pumps, andpipes terminating in one general pump-inlet and onegeneral pump-outlet,the whole forming a very simple, compact, and efficient rotary pumpingapparatus.

In the accompanying drawings, Figure 1 represents a partly-sectionalelevation of an apparatus constructedin accordance with my invention,and Fig. 2 a partly-sectional plan of the same.

A is a rotary engine, which may consist of a simple bucket-wheel mountedon a horizontal shaft, B, and arranged within a close cylinder or case.Said wheel is or may be rotated by steam, compressed air, gas, or waterintroduced within the case to act upon the buckets of the wheel by atangentially-arrauged inlet, 1), and, after having performed its duty,escaping by an outlet, c

The shaft B of said engine is arranged to project through bearings d onreverse sides of the engine-case, and, passing through stufiingboxes ee, carries on its opposite overhanging ends two centrifugalpumping-wheels, D D, arranged to work within circular cases or cylindersE E of a pair of centrifugal pumps.

By this arrangement the pumping-wheels have a balancing actiouon theengine-shaft, and the bearings of the latter also form the bearings forthe wheels, thus reducing friction and insuring an easy run of theengine and pumps.

The fluid or liquid to be pumped is introduced by a general inlet-pipe,G, which is of sufficiently large area to supply both pumps, and whichconnects, by branch pipes G G, with the outer central portions of thepump cylinders or cases E E, and connected tangentially with saidcylinders or cases outside of or beyond the circumferential travel ofthe pumping-wheels are branch outlet-pipes H H, for the pumped liquid,which outlet-pipes also terminate in or are connected with a generaloutlet-pipe, H, ofsufficientl y large area to provide for the dischargeof the liquid from both pumps.

This combination of parts or devices forms a very simple, compact, andefficient pumping apparatus, in which two rotary or centrifugal pumpshaving one general inlet and one general outlet are driven by a rotaryengine intermediatelyarranged between the pumps, and

directly and intermediatel y applied to a single shaft which is commonto both the engine and the pumps.

The invention is not restricted to any particular kind of rotary engine,nor to any particular construction of rotary pumps.

I claim The combinationli ff two rotary or centrifugal pumps, anii1termediately-arran ged rotary engine for driving said pumps, a singleshaft common to both said engine and said pumps, and pipes termiuatinginone general inlet and one general outlet for both pumps, the whole beingarranged substantially as shown and described.

B. T. BABBITT.

Witnesses:

L. BABBITT, D. J. NEWLAND.

